Spraying-nozzle.



CHARLES D. PARKER, OF WORCESTER, MASSACHUSETTS.

sPRAYINc-No'zzLE.

Specification of Letters Patent.

Patented Dec. 19, 1911.

Application filed March 6, 1911. Serial No. 612,607.

To all whom may concern:

Be it known that I, CHARLES D. PARKER,

a citizen of the United States, residing at: Worcester, in the county of Worcester and State of Massachusetts, haveinvented a new and useful Spraying-Nozzle, of which, the

following is a specification.

The principal objects of the inventlon are to provide an improved way of applying a flowing material under pressure tothe surface to be treated, so that it will be spread uniformly, evenly, and gently throughout the extent thereof instead of being sprayed or splashed thereon; toprovide an improved form of nozzle for thus directing the molten material on the road surface so as to apply it in the form of a thin continuous sheet; andto provide improvements 1n details of construction as will appear here-" inafter. I

Reference is to be had to the accompanying drawings in which- Figure 1 is a longitudinal vertical sectional view of a nozzle and connected parts in accordance with this invention, and Fig. 2 is a rear elevationof the nozzle removed from the casing. v v

Ordinarily molten bitumen, oil, and other road surfacing materials have been applied by allowing them to run through nozzles by gravity in such away as to spray or splash the material more or less unevenly, thus leaving some spots untreated artd over saturating others. This invention is designed to be used with a pressure system so that the flow of liquid can be controlled, and it involves the use of the pressure in such a way as to apply the liquid more efficiently and yet so uniformlythat it has no tendency to disrupt the surface on which it is deposited.

The invention is illustrated in a form in which molten road surfacing material is introduced under continuous uniform pres-' sure preferably from a rotary pump (not shown) by a pipe 9 into a chamber 10. The

chamber is provided with an opening 11 which in the drawings is shown as of conical form, in which is driven a nozzle 12. This nozzle is provided with a rear transverse baffle plate 13 having a front vertical flat surface. Its upper portion 14 which comprises a flat plate closing the opening 11 is provided with two perforations 15. These two perforations are formed on opposite sides of the vertical medial line of the plate 13 and at an acute angle to each other and to the plate. One is nearer the plate than the other "so that the jets issuing from them will pass each other without contact and I then almost immediately strike the surface of the baffle plate. When liquid is intro- -duced into the chamber under pressure, it

will be discharged with considerable force ,through these perforations in fine jets against the flat surface of the baffle plate at such an angle as to convert the jets into vertical sheets of molten material. This results in two sheets of molten material being distributed from the baffle plate, each one with a substantially vertical contacting edge,

these two edges practically coinciding so that there is no discontinuity between the sheets. This gives what is practically a single fan-shaped sheet delivered from the baffle plate. In practice this is a material advantage over the forms of nozzles which deliver a spray asthematerial is delivered in a very fine sheet and yet it is delivered in a uniform manner under pressure throughout the surface being treated. WVhen a plurality of nozzles are used they are arranged in transverse alinement at such distances apart that the several sheets are continuous at the road surface.

The nozzle preferably is provided with a screen 16 extending up into the chamber above to protect the perforations from the entrance of clots. In order to hold the nozzle in position a fulcrumed plate 17 is shown held in position by a bolt 18 and provided with an adjustable screw 19 for engaging the flat part of the horizontal portion of the nozzle. This is located at the rear of the perforations 15 so that it is entirely out of contact with the jets and sheet of molten material.

I am awanothat it can be carried out in many other ways than that illustrated. Therefore, I do not wish to be limited to the specific form shown, but I What I do claim is 1. In a spraying nozzle, the combination with a baffle plate, of means for directing two separate streams at substantially the same acute angle against said plate at adjacent points, whereby they will be converted into thin sheets of spray in the same plane substantially parallel with the surface of said plate, said means being arranged to direct said streams at a substantial angle with each other to cause the adjacent edges of the two sheets of spray substantially to coincide.

2. As an article of manufacture a nozzle having a bafiie plate and two perforations at substantially the same acute angle to the bafiie plate and at acute angles to each other and to the medial line of said plate and on opposite sides of said medial line, one being located nearer the plate than the other.

3. In a device of the character described, the combination of a chamber for receiving liquid, and a nozzle therefor comprising a fiat plate forming one wall of said chamber and having two perforations therethrough, and a second flat plate extending at rightangles therefrom, both of said perforations being at an angle to the second plate and at acute angles to a line on the said second plate perpendicular to the first plate, one of said perforations being located nearer the second flat plate than the other, whereby the streams issuing from said perforations will flow out of contact With each other and will strike said second plate at different points.

4. In a device of the character described,

Copies of this patent may be obtained for the combinationof a chamber for receiving liquid having a conical opening, a nozzle therefor comprising a plate forming one wall of said chamber, and a flat plate extending therefrom, the first plate having a perforation therethrough at an angle to the second and spaced therefrom, said nozzle having a conical portion located in said conical opening, and adjustable means outside said chamber and bearing on the first named plate for holding the nozzle in position.

5. In a device of the character described, the combination of a chamber for receiving liquid, and a nozzle therefor comprising a removable plate forming one wall of said chamber, and a second plate extending at an angle from one side thereof, the first named plate having a perforation therethrough at an angle to the second and spaced therefrom at its outer end, with a holding plate having two separate bearing points, one engaging said movable plate, and means between said points for securing said holding plate and clamping the removable plate in place.

In testimony whereof I have hereunto set my hand, in. the presence of two subscribing witnesses;

CHARLES D. PARKER. Witnesses:

ALBERT E. FAY, MARY E. REGAN.

five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

